IBM 5280 User's Setup Manual page 162

7. You have the 1200 bps integrated nonswitched/switched
communications line. Do the following:
a. Remove the wrap connector by pulling straight out.
Wrap Connector
b. Put the wrap connector in the protective recess area of the machine
verification binder.
c. Push the connector into the telephone line socket.
~ TelePhone
Line Socket
~ ~
(it is probably located
",' 0
C)
on or near a wall.)
" C)
"
/ ' '
",
Connector
User's Setup Procedures 155